Matches 1 - 32 out of 32


Match Document Document Title
7129665 Control apparatus for feed driving system  
A control apparatus for a machine that can be operated at high precision in a stable control state is provided by driving a movable body with control parameters suited to the mechanical state. A...
4600872 Apparatus for variable speed drive of an induction motor from a fixed frequency AC source  
A control system for driving a variable speed AC motor employing a fixed frequency AC power source, combines pulses representative of a desired slip frequency with pulses of a frequency...
4013911 Displacement - electricity transducer  
A displacement - electricity transducer contains a movable magnetic core and a fixed magnetic core oppositely arranged so as to have predetermined gaps or clearances in at least two places. Two...
3890516 Pulse producing devices  
Pulse producing devices, particularly for use in ignition systems in road vehicles, include a pair of E-shaped cores with windings, and tracks on a movable part which influence flux flow between...
3760249 COARSE-FINE ANALOG POSITIONING SYSTEM  
An accurate closed loop analog positioning system utilizing a linear sensor of the type employing a magnetic sensing element and a balance coil which acts basically as a transformer so as to...
3588660 MASTER-SLAVE PLURAL MOTOR POSITIONING CONTROL  
3480756 WELDING APPARATUS  
3477027 VARIABLE RELUCTANCE PICKOFF AND SWITCH TO SHORT CIRCUIT AN OUTPUT WINDING  
1,172,075. Inductive transducers. ELLIOTT BROS (LONDON) Ltd. June 15, 1967 [June 18, 1966], No.27332/66. Heading G1N. In a variable reluctance transducer, comprising an E-shaped core having a...
3430134 WELD TRACKER SYSTEM HAVING MAGNETICALLY ISOLATED PICKUP COILS  
1178164 Tracking welds; detecting flaws in welds MAGNAFLUX CORP 14 Feb 1967 [26 Aug 1966] 7134/67 Headings G3R R31G R4 and R9D In apparatus for testing a welded seam in a pipe 11 as the pipe is...
3265951 Position sensing system  
3259823 Pressure responsive apparatus  
3206975 Rate of altitude change sensor and rate of climb indicator control system  
3162795 Positioning system employing a transducing device having an integral torque generator  
3116468 Spherical coordinate proportional control device  
3068386 Numerical control positioning servosystem  
3028534 Variably damped servo-control system  
971, 645. Measuring electrically. BENDIX CORPORATION. Feb. 27, 1961 [March 2, 1960], No. 7109/61. Heading G1N. In apparatus responsive to a variable, comprising a sensing device which produces an...
3005939 Precision angular indexing servosystem  
2945995 Variable damped, high gain, low phase shift two motor servo system  
2730664 Induction signal motor-operated differential transformer  
2602660 Rebalancing electromagnetic servo system  
2596732 Rebalancing servo system  
2553786 Gyrostabilizing system  
2524053 Direct coupled amplifier for servomotor systems  
2484022 Pick-off device for electrical control systems  
This application is a continuation-in-part of copending application Serial No. 448,794, filed June 22, 1942, for Electrical control systems, now Patent No. 2,462,095 issued February 22, 1949,...
2462095 Rate circuits  
This application is a division of copending application Serial No. 407,460, for Electrical control systems, filed August 19, 1941, now abandoned. This'invention relates to positional control...
2452609 Antihunt follow-up system  
This invention relates to amplifiers suitable for use in electrical servo or follow-up systems, particularly systems designed to cause a powerdriven object to follow changes of position of a...
2448564 Motor control circuits  
The present system is concerned with the art including apparatus for modifying control signals to produce time integrals or derivatives thereof, as in the control of ponderable objects and, more...
2445773 Rate taking circuit  
This invention relates to rate taking circuits, and particularly to rate circuits adapted for use with alternating current follow-up systems, remote position repeating systems, and the like....
2419979 Transformer pickoff  
This invention relates to a pickoff of the transformer type which generates a signal responsive to the displacement of two relatively movable objects. The improved pickoff is particularly adapted...
2407657 Transformer pick-off  
This invention relates to a pick off of the transformer type which generates a signal responsive to the displacement of two relatively movable objects. The improved pick off is particularly...
2139558 Follow-up system for gyro compasses  
This invention relates, generally, to electrical follow-up systems, and the invention has reference, more particularly, to an electrical followup for remote control systems wherein the position of...
2088659 Phase shift control for three element electron tubes  
This invention relates to the graduated contro of the phase on grid of three element electroi or thermionic tubes such as grid controlled gao filled rectifier tubes by which the output i: smoothly...

Matches 1 - 32 out of 32